Which clause in the Constitution prohibits states from enacting laws that conflict with federal law?

• A. The Equal Protection Clause
• B. The Necessary and Proper Clause
• C. The Supremacy Clause
• D. The Commerce Clause

Answer: (C)

The Supremacy Clause is the correct answer because it establishes the Constitution and federal laws made pursuant to it as the highest law in the land. This means that when state laws conflict with federal laws, federal laws will prevail. The Supremacy Clause is found in Article VI, Clause 2 of the Constitution. This principle ensures a uniform legal framework across the states and prevents states from undermining the federal government’s authority.

In contrast, the Equal Protection Clause focuses on ensuring that individuals receive equal protection under the law, typically in the context of discrimination. The Necessary and Proper Clause grants Congress the power to create laws necessary for executing its enumerated powers, but it does not directly address conflicts between state and federal laws. The Commerce Clause regulates interstate commerce and empowers Congress to manage trade between states, but it does not serve the specific purpose of asserting federal law supremacy over state law.